Thank you for the explanation. It matches what I am seeing. My customer sent me his datalog Which seemed strange to me because there was random downward spikes in the rpm logs which mostly occurred late in the races, or at the end of a long straightaway. His wash was non existent but the transfer windows/ducts looked somewhat wet. The plugs look like they have flecks of aluminum on them, but it must be microscopic damage because the pistons look undamaged, unless the flecks are coming from the ring grove ( which I have not asked for a photo of ) where it is getting pounded by the ring.
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